• =?ISO-8859-1?Q?Anders_F_Bj=F6rklund?= <afb algonet.se> Nov 22 2004
• Thomas Kuehne <thomas-dloop kuehne.thisisspam.cn> Nov 22 2004
• =?UTF-8?B?QW5kZXJzIEYgQmrDtnJrbHVuZA==?= <afb algonet.se> Nov 22 2004

=?ISO-8859-1?Q?Anders_F_Bj=F6rklund?= <afb algonet.se> writes:

If you mean to write a portable D library,
then please try to avoid hardcoding linux...


Something that should work is:

 version(Windows)
 {
      // Win32 API stuff
 }
 version (Unix)
 {
      // POSIX API stuff
 }


But if you use "linux", then your code will *not*
compile on BSD - even if it is plain old POSIX ?


If you *do* use Linux-specific system / OS values,
then by all means continue to use "version(linux)"

And if you need stuff specific to GDC / GCC, then
you can use the handy "version(GNU)" that it sets...


But otherwise, "version(Unix)" should do just fine ?
--anders


PS. Apple Mac OS X is such a BSD variant... (called Darwin)
http://developer.apple.com/darwin/projects/darwin/faq.html

Thomas Kuehne <thomas-dloop kuehne.thisisspam.cn> writes:

Anders F Björklund schrieb am Mon, 22 Nov 2004 11:36:53 +0100:
 If you mean to write a portable D library,
 then please try to avoid hard coding linux...


 Something that should work is:

 version(Windows)
 {
      // Win32 API stuff
 }
 version (Unix)
 {
      // POSIX API stuff
 }


 But if you use "linux", then your code will *not*
 compile on BSD - even if it is plain old POSIX ?


 If you *do* use Linux-specific system / OS values,
 then by all means continue to use "version(linux)"

 And if you need stuff specific to GDC / GCC, then
 you can use the handy "version(GNU)" that it sets...


 But otherwise, "version(Unix)" should do just fine ?


Actually it isn't fine. 
GDC defines linux(where appropriate) and Unix - in contrast DMD only
defines linux. For the time being everyone should add

# version(linux){
#     version=Unix;
# }

into the head of each source file ...
Seems to be worth a feature request, doesn't it?

Thomas

=?UTF-8?B?QW5kZXJzIEYgQmrDtnJrbHVuZA==?= <afb algonet.se> writes:

Thomas Kuehne wrote:

But otherwise, "version(Unix)" should do just fine ?


 Actually it isn't fine. 
 GDC defines linux(where appropriate) and Unix - in contrast DMD only
 defines linux. For the time being everyone should add


Aargh! That's even worse than the lower-case "linux"

 # version(linux){
 #     version=Unix;
 # }


It could well be that GDC already patches this in
Phobos, so that was why I didn't even notice it...

Note to self: test with the linux DMD compiler too.


I suppose that:
 version(Windows)
 else /* version(Unix) */


could also be used as a work-around meanwhile ?
(better than hardcoding "linux", at any rate)

 into the head of each source file ...
 Seems to be worth a feature request, doesn't it?


It does. Or even a bug report.

--anders